Wheel.



W. H. a. W. J. CLARK.

WHEEL.

APPLICATION FILED 00T.29,1913.

Patented May 26, 1914J /fz/f//fa/m d C//f Inventors M1 i wwwa LU. Sac

Attorney Witnesses:

Zd "WL 5MM TES WILLIAM H. CLARK Ann wILLrAM a. CLARK, or SALEM, omo, Assmnons 'ro THE w. a. CLARK COMPANY, or SALEM, omo..

WHEEL.

' Speeicationof Letters Patent.

Patented May 26, 1914.

Application nled october 29, 1913. Serial No. 797,940.

To all whom it may concern.'

Be it known that we, WILLIAM H. CLARK and l/VIIMAM J. CLARK, Citizens of the United States, residing at Salem, Columbiana county, (Dino, have invented certain new and useful Improvements in Wheels, of

j which the following is a specification.

This invention relates to wheels and has been aimed particularly at wheels for trucks, though applicable to wheels of such large diameter that they might not be termed truck wheels, and the improvements are applicable to Wheels having either metallic or rubber treads.

ln sheet-metal wheels for truck purposes, lightness "of Vstructure is of importance and this necessarily calls for thin metal in the construction, and thin metal is also desirable by reason of its facility for being struck up into desired form. Butwhile lightness ris important, strength is equally so.

Truck wheels running loose on fixed axles are subject to wear at the ends ot the hubs, and in some construction such wear, if extended, may result in destroying the integrity of the structure. Uur invention provides lightness, strength, economy of structure, and long life. r

' The invention will be readily understood from the following description taken in conneet-ion with the accompanying drawing in Which:

Figure 1 is a vertical diametrical section of a wheel embodying an exemplifcation of our invent-ion, the wheel being illustrated as of metall-ic tread type: Fig. 2 a similar vertical section of a part of the wheel, illustrated as being of rubber tread type, or provided with a rubber tire: Fig. 3 a face view of a portion of the stifening disk in one of its forms: and Fig. 4 a plan of a portion of 'the disk illustrated in Fig. 3.

ln the drawing-ignoring Fig. 2 for the present :--1, indicates one of the side-halves of' the wheel, formed by being struck up of sheet-metal: 2, the second side-half, the two conjoining to form the complete body of the wheel: 3, the tread of the wheel formed by the flanges of the two side-halves: 4, inwardly projecting annular portions of the side-halves at a point between the tread and hub-portions Iof the wheel, these inwardly projecting portions having flat innerfaces presen-ting toward cach other: 5, hub-portions formed by annular flat surfaces at the general central portions of the side-halves, these hub-portions being separated from each other so as to produce a hub of considerable length: 6, a stretcher-tube disposed concentrically between the hub-portions 5: 7, washers, of substantial thickness, disposed against the outer faces of the hub-portions 5 and having bores corresponding with the 11, a ring disposed within the metallic tread 3 of the wheel and in close contact with the interior surface of the tread-flanges of the side-halves: 12, a Hat st-iiiening disk disposed between the two side-halves and fitting liatly against the inner faces of annular portions 4 and having its periphery in close Contact with the interior of ring 1l, if that ring be employed, this stifi'ening disk having a central aperture adapted to closely fit the exterior of stretcher-tube 6: 13, a circumferential series of transverse c0rruga tions at the periphery of the stiffening disk: 14, annular projections from the ,outer surfaces of hub-portions 5 closely engaging the inner peripheral corners of the washers: and 15, (Fig. 2) a rubber tire which may be employed upon the wheel, the outer extremities of the side-halves being suitably formed to receive the tire.

The structure illustrated in Fig. l may have the inner edges of the flanges of the two side-halves in mere contact with cach other or they may be welded together, as f by electric' welding process, and the tread formed by these fianges may be employed as a metallic tread or, if desired, it may have a tire of rubber or analogous material applied to it.

Ring 11 greatly strengthens the periphery of the wheel and results in a thick tread while the metal of the side-halves are thin. The side-halves and stretcher-tube and washers having been assembled, box 9 is placed in position and its ends upset, thus binding the parts of the structure together. The upsetting of the ends of the box, to be done under considerable pressure, not only causes the ends of the box to* engage the Washers so as to forcefully pinch the Washers, hub-portions and stretcher-tube together, but the upsetting also forcefully expands the box and causes it to .till the stretcher-tube with extreme tightness, the result being a structure of extreme rigidity and capable of standing the hard punishment incident to the use of wheeis on trucks. For extra heavy duty the stidening disk l2 may be applied and this very much further stiens the structure radially and laterally. The corrugating of the periphery of the fiat stidening disk increases the extent of bearing between the rim of the disk and ring ll, or between the rim ,of the disk and tread 3 if ring 11 be not employed, and aise .transversely stifiens the rim or" the disk and provides'for a very rneterial increase in the strength of the general structure even if the stiening disk be made thin.

it wili be noted that the upset ends of the box project somewhat beyond the outer faces of the washerse it is these projecting ends which receive the Wear due to side thrusts in the use or the wheei,and in the present ease the construction is such that the ends of the box may wear even with the outer faces of the washers, and that the outer faces of the washers and ends of the box may Wear considerable Without releasing the general structure from the binding eect of the upsetting Y of the box.

portions, a stretcher-tube having its ends engaging the inner surfaces of the hub-portions, counterbored Washers disposed against the outer surfaces of the hub-portions, and a box tightly fitting Within the bores of the Washers, the hub-portions and the stretchertube and having its ends upset within'the counterbores of the washers, combined substantially as set forth.

3. A. metallic wheel comprising, two sheetmetal side-halves provided with iiat hubportions, a stretcher-tube having its ends engaging the inner surfaces of the hub-portions, counterbored washers disposed against the outer surfaces of the hub-portions, and a box tightly fitting within the bores of the washers, the hub-portions and the stretchertube and having its ends upset within the counterbores of the washers and projecting beyond the outer faces' of the washers,.com bined substantially as set forth.

Li. A metallic wheel comprising, two sheetmetal side-halves having dat annular portions, a tread-portion for the Wheel, means for securing the two side-halves together, and a dat stiiening disk disposed between and in Contact with the flat annular portions ot' the side-halves and having its periphery in engagement with the outer portions of the wheel, combined substantially as set forth.

5. A metallic Wheel comprising, two sieetmetal-side-halves having dat annular portions, means for securing saidside-halves to each other, a fiat stiifening disk disposed between and in contact with the flat annular portions of the side-halves and having its periphery in engagement with the outer portions of the wheel, and transverse corrugations at the periphery of the stiifening disk, combined substantially as set forth.

WILLIAM H; CLARK. WLLAM J. CLARK.

Witnesses:

JOHN E. Roenns, J, i?. Pnnnose. 

